Next to the ruins and still intact, the 12th century Saint-Nicolas Church is very typical of the Romanesque style. It contains sculpted altarpieces from the 16th century and pretty paintings.
At the western end of the Château's esplanade you will find the Chapel Notre-Dame des Sept Douleurs (Our Lady of the Seven Sorrows). It is well named as it was the fruit of a bloody episode of usurpations and spoliations, cut throats and stabbings, thefts and ransoms. Finally, in atonement for the massacre of five members of the Ponteve family (who, to be honest, deserved their fate: they were haughty and violent and ruled like tyrannical dictators), the villagers were ordered to build this chapel, which they first called Notre-Dame d’Espaïme, from a Provençal word meaning terror and fear.
On a more inspirational note, in 1949 two Englishwomen left everything behind for a simple life in this hilltop village of Provence. They took in abandoned children and orphans from the Second World War to give them an environment in which they could grow healthy and gain confidence. (If you're interested, the book “Castle on a Hill” recounts their experience).
It's true that the environment around Bargème is exceptional. Several hiking trails cross the countryside and you can visit the hamlets that belong to the commune, like the hamlet of Saint-Laurent with its chapel, not far from the old mill of Bargème.